1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d744703ef487154508b964bd1bda48a8e5997cc04f8c2c7ae52e6c354bb6bad. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc060c1d-20c6-48ec-b2da-ac93f9f6bf8a.json and https://artists.proofprofile.net/proofs/artist/fc060c1d-20c6-48ec-b2da-ac93f9f6bf8a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bcb9f3779e5f0bb277bd7f6a06ab9a3031a048d82c85889f508ab5d738fb83. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b2f8449f5598951d92f5413df727cba5a658171f193b0cdb3450a29bdfc56c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f96d06ccea750bf7b35099a5eecfe7a71479966888e3dd5a71939054e9299. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:29:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1ee86ca21cb407ad294003da627a579d7b5a11ab459e8eeeb74e3149c539c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b755e2c1a2c0a8dd2ee09d4bf1301b474b1a0a506bab4d8c716f504f58be241. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892d125f09f5a6c547bee2e9be0f607680ee3a19c6cf682bc48b886735ab760. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bcb9f3779e5f0bb277bd7f6a06ab9a3031a048d82c85889f508ab5d738fb83. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39bcc157e8e8baa6426c8adc4b58528e6aa9133e9c605b520eed046bd78d15d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b2f8449f5598951d92f5413df727cba5a658171f193b0cdb3450a29bdfc56c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f96d06ccea750bf7b35099a5eecfe7a71479966888e3dd5a71939054e9299. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1ee86ca21cb407ad294003da627a579d7b5a11ab459e8eeeb74e3149c539c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d155943c81e40104a92eb562a8faec8138ebb9f61ac727c2334a27fda8383d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19256a1f739f4545bf24a80eab0a776a90ffa354c02bb18918af82f2e7086e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b755e2c1a2c0a8dd2ee09d4bf1301b474b1a0a506bab4d8c716f504f58be241. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892d125f09f5a6c547bee2e9be0f607680ee3a19c6cf682bc48b886735ab760. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM4TW1674861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41218fc359005c01dc5b2f65a6fc374c1124dc845cf87cb4cc53cfd0949ce3a4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1841473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3333c8526310cd190fed2314f54039a2bc334ebbd73d77fd5e1cffd4dc704dc6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1792650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7e387a3e5c534844e082e71c8f6ba5b9180ee01fe4bf70b7a25e3de03069dd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1792652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3333c8526310cd190fed2314f54039a2bc334ebbd73d77fd5e1cffd4dc704dc6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1792650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce9b7a4ed9c770e4827412301fbc25dbbfb8851c25c6116a6670ef592e53287. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMG1583636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f27fca306d0dcf14cdb7b6e5adf879d62ad1f88711a4cd8185063894c1f4cf5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1792651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7e387a3e5c534844e082e71c8f6ba5b9180ee01fe4bf70b7a25e3de03069dd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1792652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dd247f0f102800d53f4500e7a64ace327a9e653a096d40cfea5c1583a3149d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1792653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11263676a14769756237fd7d8f46805c20056afc78fc8101ceb191368d11192. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2193825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a154f78a1e2a7588d864e2e98203c748c94ac3e3b91985303a83ac31e422d1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06a34db3774c5ed1040a5b597b8086ac12a6e1937ad51aca52cf2021dde58cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe36f1968fc742594b277621378504a441637c9de58b63d53efb12f48158a30f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fcda23bf7cdfff71cdb5bee8d5aa8223059b9a94e26582233ee2c852df4048. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b70a0bdb40ffae5cb4824f840e609bf7c81d90a4158927b0fc26f3d15e1513. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93f14a48bce7591e3efb4d4883f2c9b914e8c05d02467ed38ae8548514ba685. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09361e3e2da344f6f79cce288fe8d10409762265d6d3adbfbaa2598ef0eff069. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf98ce171c2e93a0c6790d728cb6f8f9cd61f860f19ec495ee91851dd8e6c9fe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923ed8bed69804c252d724d167f864a07133598b873eb189e0eae6b989755b68. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7222a12e0812d74d81a84c481388867e8ebea7593a62fab6ab72f587cab4ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7b5f89af9d9a0d7a675e55de1817d8f88638756f33c9390df4602ecc5d8798. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1daf998988dc4250f5340eef2dd2eb856a38d2cab603f6e6b46b566562c638c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fcda23bf7cdfff71cdb5bee8d5aa8223059b9a94e26582233ee2c852df4048. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2102935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a15c5b9c747a813a82c10d2d1195a8059f261b06160b09aec84a07199f07471. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4164b93887b5ecde448d33bb8bbb3bdd4b5cc7c809531a587f47914003cc7e5f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COA6W2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe62a2a40975949e95c6db909ef59ef633ab79a508127ec0e56166dea6c692ba. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2558276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d33767f115d5248c6a51dd740d4ad8fba19d85c59ce8a2cc9bd40cea8747ac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAGJ2291011.